Preheat the oven to 240C (220-240, depending on your oven). Place the duck on a baking sheet with the skin down, pour half of the marinade and bake for 5 minutes. Turn the duck over, pour over the remaining marinade and bake with the skin up for another 15-20 minutes (depending on which duck you like). I prefer it to be well-fried, without blood, so I cook for 20 minutes). Remove from the oven, cover with foil and let “rest” for 5 minutes. Cut the duck into thin enough plates.